Wide angle camera alternatives for the rear camera mirror

[Ry Guy]

I added the rear camera mirror to my ‘24 Silverado 2500 custom. It was relatively inexpensive using used parts off of eBay. 
 

While it is a neat feature, I don’t find it to be all that useful. So I thought, why not try converting it to a bed view camera for hooking up the 5th wheel since I don’t have a video processor module. 
 

My initial attempt involved finding a bed camera third brake light and swapping the camera from the rear camera mirror brake light into it. It did work in a sense, but practically it was unusable because of the amount of zoom built into the camera. On the furthest zoomed out setting, all you could basically see was a 6”x6” spot in the bed. The actual bed view camera is not coaxial and cannot be connected to the camera mirror. 
 

for my second attempt, I tried swapping out the rear view camera with a tailgate backup camera module. It is also a coaxial connection and is wide angle. However, I could not get the camera mirror to display a video feed from the tailgate camera module. I suspect the tailgate camera module generates a video signal that is not compatible with the video processing on the camera mirror. 
 

I know this is probably a long shot, but does anyone know of a compatible wide angle coaxial camera that works with the rear view camera mirror? 
 

I would prefer to use the OEM camera mirror, but I suspect I’m going to have to take it all out and just use a Wolfbox G900 or something similar if I want to add a bed camera.